package org.springblade.modules.auth.handler;

import cn.hutool.core.bean.BeanUtil;
import org.springblade.core.datascope.enums.DataScopeEnum;
import org.springblade.core.datascope.handler.DataScopeHandler;
import org.springblade.core.datascope.handler.ScopeModelHandler;
import org.springblade.core.datascope.model.DataScopeModel;
import org.springblade.core.secure.BladeUser;
import org.springblade.core.tool.constant.RoleConstant;
import org.springblade.core.tool.utils.Func;
import org.springblade.core.tool.utils.PlaceholderUtil;
import org.springblade.core.tool.utils.StringUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.*;
import java.util.stream.Collectors;

/**
 * @Description 数据权限规则，自定义规则增加部门子级参数（重写org.springblade.core.datascope.handler.BladeDataScopeHandler）
 * @Author ysq
 * @Date 2022/6/18
 **/
@Component
public class DataScopeCustomHandler implements DataScopeHandler {

	@Autowired
	private ScopeModelHandler scopeModelHandler;

	@Override
	public String sqlCondition(String mapperId, DataScopeModel dataScope, BladeUser bladeUser, String originalSql) {
		//数据权限资源编号
		String code = dataScope.getResourceCode();

		//根据mapperId从数据库中获取对应模型
		DataScopeModel dataScopeDb = scopeModelHandler.getDataScopeByMapper(mapperId, bladeUser.getRoleId());

		//mapperId配置未取到则从数据库中根据资源编号获取
		if (dataScopeDb == null && StringUtil.isNotBlank(code)) {
			dataScopeDb = scopeModelHandler.getDataScopeByCode(code);
		}

		//未从数据库找到对应配置则采用默认
		dataScope = (dataScopeDb != null) ? dataScopeDb : dataScope;

		//判断数据权限类型并组装对应Sql
		Integer scopeRule = Objects.requireNonNull(dataScope).getScopeType();
		DataScopeEnum scopeTypeEnum = DataScopeEnum.of(scopeRule);
		List<Long> ids = new ArrayList<>();
		String whereSql = "where scope.{} in ({})";
		if (DataScopeEnum.ALL == scopeTypeEnum || StringUtil.containsAny(bladeUser.getRoleName(), RoleConstant.ADMINISTRATOR)) {
			return null;
		} else if (DataScopeEnum.CUSTOM == scopeTypeEnum) {
			Map<String, Object> map = BeanUtil.beanToMap(bladeUser);
			// 增加部门子级参数
			if (dataScope.getScopeValue().contains("${deptChildIds}")) {
				Set<Long> deptChildIds = new TreeSet<>();
				List<Long> deptIds = Func.toLongList(bladeUser.getDeptId());
				deptChildIds.addAll(deptIds);
				deptIds.forEach(deptId -> {
					List<Long> deptIdList = scopeModelHandler.getDeptAncestors(deptId);
					deptChildIds.addAll(deptIdList);
				});
				map.put("deptChildIds", deptChildIds.stream().map(t -> String.valueOf(t)).collect(Collectors.joining(",")));
			}
			whereSql = PlaceholderUtil.getDefaultResolver().resolveByMap(dataScope.getScopeValue(), map);
		} else if (DataScopeEnum.OWN == scopeTypeEnum) {
			ids.add(bladeUser.getUserId());
		} else if (DataScopeEnum.OWN_DEPT == scopeTypeEnum) {
			ids.addAll(Func.toLongList(bladeUser.getDeptId()));
		} else if (DataScopeEnum.OWN_DEPT_CHILD == scopeTypeEnum) {
			List<Long> deptIds = Func.toLongList(bladeUser.getDeptId());
			ids.addAll(deptIds);
			deptIds.forEach(deptId -> {
				List<Long> deptIdList = scopeModelHandler.getDeptAncestors(deptId);
				ids.addAll(deptIdList);
			});
		}
		return StringUtil.format("select {} from ({}) scope " + whereSql, Func.toStr(dataScope.getScopeField(), "*"), originalSql, dataScope.getScopeColumn(), StringUtil.join(ids));
	}
}
